[linux-lvm] How to move /usr from LVM back to non-LVM?

Georges Giralt georges.giralt at free.fr
Mon Apr 28 04:40:31 UTC 2008


Charles Marcus a écrit :
> Hello,
> 
> Ok, resizing my /var partition was without incident, so thanks much to 
> the replies I got for reassurance...
> 
> Now, I have another thing I'd like to do, but it is only incidentally 
> LVM related...
> 
> When this system was first set up - not by me - they put /home, /usr and 
> /var on LVM partitions.
> 
> I'm fine with /home and /var, but I'd like to put /usr back as part of 
> the / partition...
> 
> Has anyone ever done something like this before?
> 
> I'm thinking something along the lines of:
> 
> 1. Boot off of livecd
> 
> 2. mount /
> 
> 3. Mount /usr
> 
> 4. cp /usr to /usr2 on /
> 
> 5. umount /usr
> 
> 6. mv /usr2 /usr
> 
> ?
> 
> Thanks for any comments/suggestions/how-to pointers...
> 
Hi !
As file rights and protection are important on /usr,
Consider replacing #4 with :
(cd /usr && tar cf - . ) | (cd /usr2 && tar xpf -) as root
or if you prefer
still as root
dump 0uaf - /usr | (cd /usr2 && restore -rf -)
In this second way, you do not need to mount the original /usr (but in 
this case you've to give the device file to dump instead of /usr)
But some people will question the reason you will move from LVM to plain 
filesystem/partitioning....
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